Rhodium
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Rhodium. Manuel Equihua. Rhodium. Atomic Mass:102.9055 Atomic Symbol (Rh) Atomic #: 45 Primarily found in platinum ore Primary State: Solid. History. Rhodium was discovered between 1803 and 1804 by William Hyde Wollaston in platinum ore he obtained in South America.

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Rhodium

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Rhodium

Rhodium

Manuel Equihua


Rhodium1

Rhodium

  • Atomic Mass:102.9055

  • Atomic Symbol (Rh)

  • Atomic #: 45

  • Primarily found in platinum ore

  • Primary State: Solid


History

History

  • Rhodium was discovered between 1803 and 1804 by William Hyde Wollaston in platinum ore he obtained in South America.

  • The name rhodium is derived from the Russian word “rhodon” which means rose


Rhodium

Uses

  • Rhodium's Primary use is an alloying agent to harden platinum and palladium. Those agents are use for furnace windings.

  • Rhodium is also use for jewelry, for decoration, and for a catalyst.

  • Useful for an electric contact material as it has a low electrical resistance.

  • Sterling silver


Why it is used those ways

Why it is used those ways

  • Rhodium is used for sterling silver because is does not smudge, scratch, or tarnish and if combined with platinum it could be a hundred percent impermeable


Properties

Properties

  • Melting Point: 1964°C the melting point is so high that it is rarely used to make whole pieces.

  • Boiling Point: 3695°C

  • Rhodium is hard and durable

  • It is silvery-white in appearance

  • It has a high reflectivity

  •  Density 12.45g/cm3

  • Electrical conductivity: 23 x 106 S m-1


One other interesting fact

One Other interesting Fact

  • Rhodium has the distinction of being the world's most expensive precious metal (as of 2010, 1 kilogram (kg) is worth approximately $80,000 U.S. dollars.


Sources

Sources

  • http://periodic.lanl.gov/elements/45.html

  • http://www.azom.com/details.asp?ArticleID=3483

  • http://en.wikipedia.org/wiki/Rhodium

  • http://ezinearticles.com/?What-is-Rhodium?&id=4887915


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